<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
       //window窗口
       /*var m = confirm("你会跳舞吗？");
       if (m == true) {
           alert("你会跳舞");
       } else {
           alert("你不会跳舞");
       }*/

    </script>
</head>
<body>
      
</body>
</html>